speedometer(1) measure and display the rate of data across a network connection


speedometer [options] tap [[-c] tap] ...


Monitor network traffic or speed/progress of a file transfer. At least one tap option (-f, -rx, -tx) must be entered. Option -c starts a new column, otherwise taps are piled vertically.

Note: before you use the program, satrt generating traffic by transferring files in/out e.g. with scp(1) in the network you're measuring.


Use old blocky display instead of smoothed display even when UTF-8 encoding is detected.
-f filename [size]
Display download speed with progress bar. This option must be used if directly following another file tap without an expected size specified.
-i interval
Interval in seconds. Examples: 5 or 0.25". Default is 1.
Use plain-text display (one tap only).
-rx iface
Display bytes received on network interface.
-tx iface
Display bytes transmitted on network interface.
Report zero size on files that don't exist instead of waiting for them to be created


How long it will take for my 38MB transfer to finish?

    speedometer favorite_episode.rm $(( 38 * 1024 * 1024 ))

How quickly is another transfer going?

    speedometer dl/big.avi

How fast is this LAN?

    host-a$ cat /dev/zero | nc -l -p 12345
    host-b$ nc host-a 12345 > /dev/null
    host-b$ speedometer -rx eth0

How fast is the upstream on this ADSL line?

    speedometer -tx ppp0

How fast can I write data to my filesystem? (with at least 1GB free)

    dd bs=1000000 count=1000 if=/dev/zero of=bigfile &
    speedometer bigfile






Program was written by Ian Ward <[email protected]>

This manual page was written by Jari Aalto <[email protected]>. Released under license GNU GPL version 2 or (at your option) any later version. For more information about license, visit <http://www.gnu.org/copyleft/gpl.html>.